JPH0130083Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) This invention relates to breathable shoes.

(Prior Art) Previously, in Japanese Patent Publication No. 38-21285, a breathable shoe sole was proposed in which an open-cell rubber foam was embedded in the sole with its sides exposed to the sides of the sole. has been done. This sole is designed to allow the air inside the shoe to be exhausted from the inside of the shoe to the side of the sole through the open-cell rubber foam by combining it with the ventilation material or ventilation structure inside the shoe. It is something.

However, when open-cell rubber foam is worn for a long time and the humidity inside the shoe increases, or when the humidity in the outside air increases due to rain, the humidity condenses and turns into moisture, which blocks the open cells and reduces breathability. There was a drawback that the performance was significantly lowered.

In addition, open-cell rubber foams have low mechanical strengths such as tensile strength, tear strength, and bending resistance, and have problems in durability as constituent materials for shoe soles.

(Problems to be Solved by the Invention) This invention aims to provide a breathable shoe that maintains good breathability even under high humidity and has a sole with excellent durability.

(Means and Examples for Solving Problems) This invention will be explained below with reference to actual drawings.
This invention is characterized in that an open-cell rubber foam 1 on which a base fabric 11 is laminated is exposed on the side surface of the sole 2 and buried in the sole 2 with its upper surface 101 communicating with the inside of the shoe 0. The gist of the invention is to create breathable shoes that allow for ventilation.

In this invention, open-cell rubber foam 1
Rubber latex foam, which may be composed of ordinary open-celled rubber foam, has a compression set (according to JISK6301) of 20% or less and has a microstructure. Preferably, the configuration is configured. A method for producing an open-cell rubber foam having such a microstructure is as already proposed by the applicant in Japanese Patent Application No. 61-202844 (Japanese Unexamined Patent Publication No. 63-57648). It is. If the compression set is higher than that, the impact resilience will decrease due to long-term wear.
The cushioning properties are lowered, making the shoes less comfortable to wear, and the pumping action of the rubber foam is also lowered, which tends to reduce breathability.

In this invention, open-cell rubber foam 1
The base fabric 11 to be laminated may be a woven fabric of natural fibers such as cotton, recycled fibers such as rayon or Kyapura, semi-synthetic fibers such as acetate, or synthetic fibers such as polyamide, polyvinyl alcohol, polyester, or polyacrylic. Composed of cloth, knitted fabric, and non-woven fabric. In this invention, the base fabric 11 may be laminated on both the upper surface 101 and the lower surface 102 of the open-celled rubber foam 1, or may be laminated on either one of the surfaces, or It may also be embedded and laminated in the cellular rubber foam 1.

In this invention, an open-cell rubber foam 1 laminated with a base fabric 11 is buried in appropriate locations such as the treading part and heel part of the sole 2 of the shoe sole 2 such as the intermediate sole 21 and the outer sole 22. However, when the sole 2 is buried in a place that bends when worn, such as the treading part of the sole 2, bending grooves 12, 12 are provided whose sides open on the sides of the sole 2 along the bending direction. If this is done, the bending action when worn will be promoted and walking or running will be smoother, and the bending action of the bending grooves 12, 12 will further promote ventilation when worn.

The open-cell rubber foam 1 with the base fabric 11 laminated in this manner has an intermediate sole 21,
It is embedded in an appropriate location of the sole 2 such as the outer sole 22, and the upper surface 101 has ventilation holes 31..., 4 as needed.
1... is communicated with the inside of the shoe 0 via a core sole 3 and a midsole 4.

(Effects of the invention) This invention is constructed as described above, so even if the inside of the shoe becomes highly humid when worn for a long time or in the rain, it can be laminated to the open-cell rubber foam 1. The moisture that has reached the base fabric 11 that has been
Due to the capillary action of the fibers constituting the shoe sole 1, they are sequentially discharged to the side surface of the sole 2.

Therefore, moisture does not condense and turn into water and block the open cells of the open-cell rubber foam 1 as in the conventional case, and good air permeability can be maintained even under high humidity. Furthermore, since the base fabric 11 is laminated on the open-cell rubber foam 1,
Its tensile strength, tear strength, and bending resistance are enhanced, and its durability can be significantly increased compared to conventional products.

[Brief explanation of the drawing]

The drawings show examples, and FIG. 1 is a sketch of the breathable shoe of this invention, FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1, and FIG. 3 is a basic view. FIG. 2 is a sketch of an open-cell rubber foam layered with cloth. Explanation of symbols: 1... Open-cell rubber foam;
12...Bending groove, 101...Upper surface, 102...Lower surface, 11...Base fabric, 2...Sole, 21...Intermediate sole, 22...Outer sole, 3... Core sole, 31...Thread Stomata, 4...Insole, 41...Vent hole, 0...Inside shoe.

Claims (1)

[Scope of utility model registration request] Open-cell rubber foam 1 laminated with base fabric 11
is exposed on the side surface of the sole 2, and its upper surface 10
This breathable shoe is characterized in that a part 1 is connected to a part 0 in the shoe and is embedded in a sole 2.